321145604144 has 20 divisors (see below), whose sum is σ = 622368700824. Its totient is φ = 160534326528.

The previous prime is 321145604137. The next prime is 321145604149. The reversal of 321145604144 is 441406541123.

It is a super-2 number, since 2×321145604144² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (321145604149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2335802 + ... + 2469465.

Almost surely, 2^321145604144 is an apocalyptic number.

It is an amenable number.

321145604144 is a deficient number, since it is larger than the sum of its proper divisors (301223096680).

321145604144 is a wasteful number, since it uses less digits than its factorization.

321145604144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809452 (or 4809446 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 35.

The spelling of 321145604144 in words is "three hundred twenty-one billion, one hundred forty-five million, six hundred four thousand, one hundred forty-four".